Variety of additions and bug fixes - sub now synchronized (mostly) with the shuttle variant except for, of course, the shuttle part.

Made it faster, fixed some visual bugs, slightly rebalanced starting item stocks.

Updated emergency flood system to work like in the shuttle variant + added docking release lever.

Minor visual fixes, ironed out issues with bottom docking hatch systems.

Removed some visual elements from the airlock doors as they somehow blocked passage after the latest patch.

Replaced some of the diving suits with the new variants (Abyss & combat diving suits). Added a sick preview image.

Wired up power to the top docking hatch to allow for running off outpost's grids while docked.

Added battery chargers.